of ashland



E. SHOPBELL.

Slotting Machine.

No. 70,033. v Patented 0ct. -22, 1867.

WITNESSES gotten grates gaunt titre.

IMPROVED SLQTTING MACHINE digs some mm W in tlgtsc fitters Ztxttntnntnmliinq part at flge same.

.TO ALL WHOM IT MAY CONCERN:

Be it known that I, E. SIIOPBELL, of Ashland, in the county of Ashland,and State of Ohio, have invented certain new and useful improvements inSlot Machines; and'I do hereby declare thatthe following is a full andcomplete description thereof, reference being had to the accompanyingdrawings, making part of this specification, in which- I Figure 1 is aperspective view of the machine.

Figure 2 is a topvview.

Figure 3, a side view.

Figure 4, a. detached view of. the punch.

Like letters of reference refer to like parts in the different views.

A, fig. 1, represents a block, in which is fitted a steel plate, B,provided with an elongated hole or slot, C.

This plate forms the bed or die of the machine. To this die is fitted apunch, D, which is of the same width and thickness as the length andwidth of the slot, and is constructed with two cutting lips, E, fig. 4,forming together an angular indentation in the blade of the punch, asshown in the drawing. F, fig. 1, is a guide hinged to. the side of thedie, and which is also provided with a slot corresponding in shape andsize to the slot in the die, 'with which it conforms when shut down uponit, as shown in fig. 2.

The practical use and application of this machine is as follows: Theplate or sheet in which the hole is to be punched is laid'upon the (lie,and retained thereon by clamping it down by the guide, the said guidebeing fastened down by the button G. The punch or chisel is inserted inthe slot of the guide, and then driven down through the sheet into thedie, thereby cutting a hole in the sheet corresponding in character tothat in the die. The lips of the punch, in consequence of the peculiarangle given them, cut out the hole by a sliding or shear-like action ofthe lip, instead of driving the burr through squarely, as is the way ofan ordinary punch; hence the slot cut by this machine is clean,smootlnand free from bilge on the lower side.

What I claim as my improvement, and desire to secure by Letters Patent,is

The punch or chisel D, provided with angular ,cutting lips E, incombination with the die B and hinged guide F, when arranged in themanner and for the purpose described.

E. SHOPBELL.

Witnesses:

W. H. BURRIDGE, S. F. ALDEN.

